DOI: 10.1055/s-00000022

Das Gesundheitswesen

References

Snijders TAB, Bosker RJ.
Standard Errors and Sample Sizes for Two-Level Research.

J Educ Stat 1993;
18: 237

Snijders TAB, Bosker RJ.
Standard Errors and Sample Sizes for Two-Level Research.

J Educ Stat 1993;
18: 237

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